purpose : to present a patient with radiation chiasma neuropathy, secondary to radiotherapy of paranasal sinus lymphoma who was referred for evaluation of gradual decrease of vision in both eyes case report : the patient was a 38-year-old male, with history of right maxillary sinus lymphoma, who underwent surgery, chemotherapy and radiation therapy. one year after radiotherapy, he noticed gradu...

ANTERIOR ISCHEMIC OPTIC NEUROPATHY (AION) Perioperative Arteritic Anterior Ischemic Optic Neuropathy (AAION) Hypotension Nonarteritic Anterior Ischemic Optic Neuropathy (NAION) RADIATION OPTIC NEUROPATHY POSTERIOR ISCHEMIC OPTIC NEUROPATHY ISCHEMIC OPTIC DISC EDEMA WITH MINIMAL ISCHEMIC OPTIC NEUROPATHY IN SETTINGS OF DYSFUNCTION HEMODYNAMIC COMPROMISE Pre-AION Optic Disc Edema Spontaneous or T...

A patient with progressive visual loss was found to have an optic nerve sheath meningioma. The patient was treated with stereotactic radiotherapy, a computer-guided stereotactic technique that minimizes the risk of radiation-induced optic neuropathy. Six months after treatment, the patient was doing well and showed no signs of radiation-induced optic neuropathy.

Radiation-induced optic neuropathy is a rare adverse effect of radiotherapy applied for the treatment of pituitary adenomas. We report a patient with a recurrent adrenocorticotrophin secreting pituitary adenoma who received external beam irradiation after failing surgical and medical therapy. Sixteen months after radiotherapy, the patient was presented with declining visual acuity, and radiatio...

BACKGROUND AND PURPOSE Brain white matter is frequently affected in mitochondrial diseases; optic atrophy gene 1-autosomal dominant optic atrophy and Leber hereditary optic neuropathy are the most frequent mitochondrial monosymptomatic optic neuropathies. In this observational study, brain white matter microstructure was characterized by DTI in patients with optic atrophy gene 1-autosomal domin...

PURPOSE To assess the value of contrast-enhanced MR in the evaluation of radiation-induced optic neuropathy. MATERIALS AND METHODS Three patients with rapid visual loss 1 1/2 to 3 years after radiation therapy to the optic nerves were studied with gadopentetate dimeglumine-enhanced MR images. All patients received over 5000 cGy, experienced rapid, permanent visual loss over several days to we...

conclusions demyelinating disease, anterior ischemic optic neuropathy, non-arteritic anterior ischemic optic neuropathy, autoimmune disease, and hereditary optic neuropathy could cause optic neuropathy. normal cbc parameters and the absence of clinical manifestations of vitamin b12 deficiency could not rule out its diagnosis. careful physical examinations and history-taking with a classical app...

toxic optic neuropathy (ton) is a group of medical disorders which can be defined by visual impairment due to optic nerve damage by a toxin. the exposure to a toxic substance can occur at the workplace, with ingestion of materials/ foods containing a toxin, or the use of systemic medications. ton is a disease entity which is not only under-diagnosed, but also often diagnosed at a stage when rec...